Saab Automobile AB

About: Saab Automobile AB is a based out in . It is known for research contribution in the topics: Radar & Signal. The organization has 760 authors who have published 890 publications receiving 11811 citations.

A method for the determination of the optimal altitude for a vehicle, flying at a low altitude over a sea surface.

Abstract: of EP0250039In a method and a corresponding device for determining the optimal altitude for altitude control for a vehicle (1), flying at a low altitude over a sea surface, like an anti-ship missile, the distance between the sea surface and the vehicle is measured by an altimeter (2), placed in the vehicle. The altimeter gives an altitude signal, corresponding to this distance, which is varying due to the wave structure of the sea surface. The altitude signal is processed in a signal processing unit (3), which gives to the steering means (4) of the vehicle (1) an altitude control signal, which is dependent on the difference between the actual altitude of the vehicle and the optimal altitude (Ho). The altitude signal is filtered in the signal processing unit (3) to eliminate any superimposed signals, the frequencies of which lie outside of a predetermined range of frequencies, comprising the range of frequencies of the wave movement. The rms-value of the filtered altitude signal is determined in the signal processing unit (3). An acceptable risk of a wave hit for the vehicle (1) is established. The optimal altitude (Ho) is calculated, considering the rms-value determined and the established risk of a wave hit for the vehicle (1).

Device at the adapter of a launcher and a satellite carried by the adapter

Abstract: A device for imparting rotational movement to a satellite during discharge from an adapter of a launcher. The satellite includes a first axis, a second axis, and a third axis passing through a center of gravity. The first axis, the second axis, and the third axis are mutually perpendicular. The device includes at least one line dismountably attached to a first point on the satellite and a first point on the adapter. The at least one line is attached to the satellite and the adapter such that the at least one line imparts a rotational movement to the satellite as the satellite is discharged and separates from the adapter with a discharge velocity in a direction along the first axis. A lock dismountably attaches the at least one line to the satellite.

Activity network for planning and scheduling

Abstract: A procedure for constructing a planning and scheduling network is given, where each activity to be scheduled is represented uniquely by a line. No events need be defined manually. Input is the set of activities with a list of preceding (but not necessarily immediately preceding) activities for each of them. Some comparisons with events network of Pert type are made.